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분수: 분모가 다른 덧셈1분수3

1
1 3
+
9 4
=
31 12
2
9 4
+
7 2
=
23 4
3
7 2
+
5 9
=
73 18
4
9 5
+
2 6
=
64 30
9
+
2
=
32 15
5
2 6
+
5 9
=
16 18
2
+
5
=
8 9
6
9 3
+
1 8
=
75 24
9
+
1
=
25 8
7
1 8
+
3 5
=
29 40
8
3 5
+
8 3
=
49 15
9
8 3
+
5 4
=
47 12
10
5 4
+
1 6
=
17 12
11
1 6
+
3 7
=
25 42
12
3 7
+
8 4
=
68 28
3
+
8
=
17 7
13
8 4
+
4 8
=
20 8
8
+
4
=
5 2
14
8 4
+
2 2
=
12 4
8
+
2
=
3
15
7 4
+
1 6
=
23 12